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篩骨稜 - Crista ethmoidalis

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説明

The ethmoidal crest is a horizontal crest superiorly and less prominent than the conchal crest, for articulation with the middle nasal concha. Above the ethmoidal crest is a narrow, horizontal groove, which forms part of the superior meatus

This definition incorporates text from a public domain edition of Gray's Anatomy (20th U.S. edition of Gray's Anatomy of the Human Body, published in 1918 – from http://www.bartleby.com/107/).